[  494.090853][ T1910] gre: GRE over IPv4 demultiplexor driver
[  496.237700][ T1934] ip_gre: GRE over IPv4 tunneling driver
[  518.251460][ T2137] ping (2137) used greatest stack depth: 24312 bytes left
[  523.763659][ T2187] ping (2187) used greatest stack depth: 23920 bytes left
[  559.644251][ T2507] ip6_gre: GRE over IPv6 tunneling driver
[  587.760598][ T2756] ping (2756) used greatest stack depth: 23632 bytes left
[  604.076255][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  610.348190][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  615.596186][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  621.740201][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!